Cadillac XT4 Owner's Manual page 249

248 VEHICLE CARE
If unable to wait two hours, the
engine must be off for at least
15 minutes if the engine is warm,
or at least 30 minutes if the
engine is not warm. Pull out the
dipstick, wipe it with a clean paper
towel or cloth, then push it back
in all the way. Remove it again,
keeping the tip down, and check
the level.
When to Add Engine Oil
If the oil is below the cross-hatched
area at the tip of the dipstick and the
engine has been off for at least
15 minutes, add 1 L (1 qt) of the
recommended oil and then recheck
the level. See Selecting the Right
Engine Oil later in this section for an
explanation of what kind of oil to use.
For engine oil crankcase capacity, see
Capacities and Specifications 0 326.
Caution
Do not add too much oil. Oil levels
above or below the acceptable
operating range shown on the
dipstick are harmful to the engine.
If the oil level is above the
operating range (i.e. the engine has
so much oil that the oil level rises
above the cross-hatched area that
shows the correct operating range),
the engine could be damaged. Drain
the excess oil or limit driving the
vehicle, and seek help from a
service professional to remove the
excess oil.
See Engine Compartment Overview
0 246 for the location of the engine oil
fill cap.
Add enough oil to put the level
somewhere in the proper operating
range. Push the dipstick all the way
back in when done.
Selecting the Right Engine Oil
Selecting the right engine oil depends
on both the proper oil specification
and viscosity grade:
Specification
Use engine oils that meet the dexosD
specification. Engine oils that have
been approved by GM as meeting the
dexosD specification are marked with
the dexosD approved logo. See
www.gmdexos.com.
Caution
Failure to use the recommended
engine oil or equivalent can result
in engine damage not covered by
the vehicle warranty.